High-performance asymmetric supercapacitor based on CdCO(3)/CdO/Co(3)O(4) composite supported on Ni foam

A CdCO(3)/CdO/Co(3)O(4) composite has been prepared on nickel foam through a combined hydrothermal-annealing method. An asymmetric hybrid supercapacitor (SC) device was assembled with this composite as the positive electrode and activated carbon was the negative electrode. The SC exhibited a high sp...

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Detalles Bibliográficos
Autores principales: Henríquez, Rodrigo, Mestra-Acosta, Alifhers S., Muñoz, Eduardo, Grez, Paula, Navarrete-Astorga, Elena, Dalchiele, Enrique A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9041682/
https://www.ncbi.nlm.nih.gov/pubmed/35496886
http://dx.doi.org/10.1039/d1ra05243h
Descripción
Sumario:A CdCO(3)/CdO/Co(3)O(4) composite has been prepared on nickel foam through a combined hydrothermal-annealing method. An asymmetric hybrid supercapacitor (SC) device was assembled with this composite as the positive electrode and activated carbon was the negative electrode. The SC exhibited a high specific capacitance of 84 F g(−1) @ 1 mA cm(−2), a maximum energy density of 26.3 W h kg(−1), and a power density of 2290 W kg(−1), along with a wide potential window of 1.5 V and long cycle life (92% after 6000 cycles). SCs assembled in series powered various light-emitting diodes and moved an electrical mini-motor.

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